filter special char for ColumnLabelIndexMap

package com.dangdang.ddframe.rdb.sharding.jdbc.adapter;

import com.dangdang.ddframe.rdb.sharding.jdbc.unsupported.AbstractUnsupportedOperationResultSet;

import com.dangdang.ddframe.rdb.sharding.util.SQLUtil;

import com.google.common.base.Preconditions;

import lombok.Getter;

import lombok.extern.slf4j.Slf4j;

        ResultSetMetaData resultSetMetaData = resultSets.get(0).getMetaData();

        Map<String, Integer> result = new TreeMap<>(String.CASE_INSENSITIVE_ORDER);

        for (int i = 1; i <= resultSetMetaData.getColumnCount(); i++) {

            result.put(resultSetMetaData.getColumnLabel(i), i);

            result.put(SQLUtil.getExactlyValue(resultSetMetaData.getColumnLabel(i)), i);

        }

        return result;

    }